The object vanished shortly after it was sighted...

UFO hunters
claim the satellite is an object approximately 13,000 years old of
extraterrestrial origin which orbits Earth.

The footage
reportedly shows the so-called' Black Knight Satellite' flying through the sky
above the US.

UFO hunters
claim the satellite is an object approximately 13,000 years old of
extraterrestrial origin which orbits Earth. It comes after the satellite was
recently reportedly filmed moving past the International Space Station and
moon.

In shuddery
footage posted on YouTube, a large, black object was filmed over Jacksonville,
Florida.

The
bizarrely-shaped structure is shown with three smaller black objects hovering
close to it. The objects then suddenly vanish. The object vanished shortly
after it was sighted.

A woman who
filmed the strange-looking object initially believed to be a kite.

Tyler
Glockner, who runs Secureteam10, which posted UFO videos online said:
"This craft looks mysteriously similar to the 'Black Knight Satellite'
which is also believed to have been caught in a set of 1998 Nasa images.

"It is
of extraterrestrial origin and is orbiting us right now in near-Earth polar
orbit.

"The
resemblance of the 'Black Knight' to the craft that was recorded over
Jacksonville begs the question that the Black Knight is not only real, but has
the ability of coming out of its Earth orbit to visit us down here on the
surface for an unknown purpose."

'Black
Knight satellite' is dismissed by many as hoax dreamed up by conspiracy
theorists.

The story
is thought to have originated in 1954 when newspapers in the US ran stories
attributed to retired naval aviation major and UFO researcher Donald Keyhoe.

He
allegedly said the US Air Force had reported detecting two satellites orbiting
Earth. No nations had the technology to launch satellites at that point.

But this
video adds to a growing amount of evidence that UFO-hunters claim point its
existence.

Nasa
pictures purportedly showing the satellite were released following the 1998
Endeavor Space Shuttle mission to the International Space Station (ISS).

However,
Nasa said it was just a thermal blanket lost during work on the IS, the Express
reports.